Quantitative ground-motion estimates
Estimates of ground motion in eastern North America (ENA) are hampered by a lack of data. Because of this, most estimation schemes have been based, at least in part, on data obtained from the more seismically active and better-instrumented western North America (WNA). In view of the different geolog...
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Veröffentlicht in: | Annals of the New York Academy of Sciences 1989-06, Vol.558, p.81-94 |
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Sprache: | eng |
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Zusammenfassung: | Estimates of ground motion in eastern North America (ENA) are hampered by a lack of data. Because of this, most estimation schemes have been based, at least in part, on data obtained from the more seismically active and better-instrumented western North America (WNA). In view of the different geologic structures and tectonic settings in the two regions, however, it is not clear a priori that data from WNA can be exported to ENA. A theoretical model has been developed in the last few years that does not require WNA data for the estimation of ground motions in ENA. This model constructs the ground motion from filtered random Gaussian noise, for which the filter parameters are determined by a seismological model of both the source and the wave propagation. Many of the parameters in the model can be determined from independent seismological investigations in ENA or in other regions with similar tectonic characteristics. |
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ISSN: | 0077-8923 1749-6632 |